Background: I’m a Mechanical Engineering senior and I am looking for help on my senior design project.
Project: surface a breath hold diver (free diver) after a timer expires with an inflatable life jacket.
Parts I plan on using:
1x Cerberus mainboard
1x Character display module
1x UC Battery 4xAA module
1x Relay X1 Module
2x Button Modules [em]Probably going to need to change this since buttons push themselves at depth[/em]
1x Elexol 8 Channel Analog to Digital I/O board (http://www.robotshop.com/elexol-8-channel-analog-to-digital-i-o-board-4.html)
1x Electrically operated valve (http://www.ascovalve.com/Common/PDFFiles/Product/Mag_LatchR1.pdf)
1x [em]Pressure Transducer[/em]
I found this pressure transducer, http://www.dwyer-inst.com/Product/Pressure/SinglePressure/Transmitters/Series628CR/Ordering which @ Gene said would work just fine.
Is the only difference between a transducer that outputs voltage vice current simply a resistor? IE could I use the proposed transducer and simply add a resistor to drop the current over it and input that into the ADC?